NCERT Solutions, Class 9 Maths Chapter 11 Constructions: Exercise 11.1, answered for the NCERT Class 9 textbook.
Exercise 11.1 Class 9 Maths Chapter 11 Constructions
1. Construct an angle of 900 at the initial point of a given ray and justify the construction.


2. Construct an angle of 450 at the initial point of a given ray and justify the construction.

3. Construct the angles of the following measurements:
(i) 30° (ii) 22 1/2° (iii) 15°



4. Construct the following angles and verify by measuring them by a protractor:
(i) 75° (ii) 105° (iii) 135°



5. Construct an equilateral triangle, given its side and justify the construction.
